Malicious PDF — malware analysis report

Static analysis result for SHA-256 e513493d9fab9d2b…

MALICIOUS

PDF

87.3 KB Created: 2021-02-22 09:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 07c3dd82fae130e726ad7c92a328ab61 SHA-1: 380e2440062a444b15744b029fae8b9975db5ce0 SHA-256: e513493d9fab9d2bc7eeda4ccac1b8d0def5018736cb018667299c4c34b66409
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/wix?keyword=cuales+fueron+las+primeras+civilizaciones+antiguas'. This indicates the document's primary purpose is to lure the user to a malicious site, likely for phishing or malware distribution. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yafferge.ru/wix?keyword=cuales+fueron+las+primeras+civilizaciones+antiguas In PDF document text
    • http://construt.site/92761030836j53l7.pdfIn PDF document text
    • http://hdvideo.design/mcdonalds_breakfast_menu_nutritionoukeg.pdfIn PDF document text
    • http://mon-cmb.best/38607687659yysip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_5ff66b345fe92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404976/normal_601546847ea04.pdfIn PDF document text
    • http://smeh-mif.space/2032166687dotyp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467287/normal_5fed1451bafc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446635/normal_5fd1d8efdc2e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413455/normal_6024b50d98548.pdfIn PDF document text
    • http://wamuvosuvebupa.iblogger.org/photoshop_cs5_free_download_full_version_with_crack_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tubukeganuji/maquina_de_coser_brother_xl_5130_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/application_form_for_australian_passport_overseas.pdfIn PDF document text
    • http://xutomonil.rf.gd/dell_optiplex_7010_network_driver_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/bifujokugidato.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/start_up_business_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/good_food_guide_canberra_2018.pdfIn PDF document text
    • http://wepezip.epizy.com/74981051744.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/who_is_an_istj_compatible_with.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/xibowete.pdfIn PDF document text
    • http://bejuxufuvojofa.rf.gd/judanuwefevujokilufog.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001071f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071F 5352 bytes
SHA-256: d959f3b80a35a16158c12fbfaea320a84fa1892426208e4ce1c900437a3bbd87
font_01_sfnt_off0001194f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1194F 11856 bytes
SHA-256: 950622c7b33456ebe5198000d1c9a0b4e18ad4c49aa712ec602d90094ec0089e
font_02_sfnt_off00013f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F47 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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